dict_recombinators_swap: Swap Recombinator

In miesmuschel: Mixed Integer Evolution Strategies

Swap Recombinator

Description

Values between two individuals are exchanged. This is relatively useless as an operator by itself, but is used in combination with RecombinatorCmpMaybe to get a recombinator that is crossing over individuals uniformly at random. Because this is such a frequently-used operation, the RecombinatorCrossoverUniform pseudo-class exists as a shortcut.

Configuration Parameters

None.

Supported Operand Types

Supported Domain classes are: p_lgl ('ParamLgl'), p_int ('ParamInt'), p_dbl ('ParamDbl'), p_fct ('ParamFct')

Dictionary

This Recombinator can be created with the short access form rec() (recs() to get a list), or through the the dictionary dict_recombinators in the following way:

# preferred:
rec("swap")
recs("swap")  # takes vector IDs, returns list of Recombinators

# long form:
dict_recombinators$get("swap")

Super classes

miesmuschel::MiesOperator -> miesmuschel::Recombinator -> miesmuschel::RecombinatorPair -> RecombinatorSwap

Methods

Public methods

• RecombinatorSwap$new()

• RecombinatorSwap$clone()

Inherited methods

• miesmuschel::MiesOperator$help()
• miesmuschel::MiesOperator$operate()
• miesmuschel::MiesOperator$prime()
• miesmuschel::MiesOperator$print()
• miesmuschel::MiesOperator$repr()

---

Method new()

Initialize the RecombinatorCrossoverSwap object.

Usage

RecombinatorSwap$new(keep_complement = TRUE)

Arguments

keep_complement

(logical(1))
Whether the operation should keep both resulting individuals (TRUE), or only the first and discard the complement (FALSE). Default TRUE. The ⁠$keep_complement⁠ field will reflect this value.

---

Method clone()

The objects of this class are cloneable with this method.

Usage

RecombinatorSwap$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

See Also

Other recombinators: OperatorCombination, Recombinator, RecombinatorPair, dict_recombinators_cmpmaybe, dict_recombinators_convex, dict_recombinators_cvxpair, dict_recombinators_maybe, dict_recombinators_null, dict_recombinators_proxy, dict_recombinators_sbx, dict_recombinators_sequential, dict_recombinators_xonary, dict_recombinators_xounif

Examples

set.seed(1)
rs = rec("swap")
p = ps(x = p_int(-5, 5), y = p_dbl(-5, 5), z = p_dbl(-5, 5))
data = data.frame(x = 0:5, y = 0:5, z = 0:5)

rs$prime(p)
rs$operate(data)

rx = rec("cmpmaybe", rec("swap"), p = 0.5)  # the same as 'rec("xounif")'
rx$prime(p)
rx$operate(data)

miesmuschel documentation built on April 4, 2025, 5:19 a.m.